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Anti-slagging biomass pellet fuel and preparation method thereof

A biomass particle, slagging technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of difficult to remove, ash accumulation, slagging, etc.

Inactive Publication Date: 2021-08-31
湖南创威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Biomass fuel raw materials such as straw, straw, rice husk, etc. will enrich a certain amount of alkali metal elements (such as K, Na, Cl, S, Ca, Si, P, etc.) during the growth process. Most of these substances have a melting point of 700-900°C. When biomass fuel is burned in a boiler, the temperature in the furnace is much higher than the melting point of the alkali metal compound, which causes the alkali metal compound to soften. Forms glassy hard slag that is difficult to remove
In addition, the flue gas is also entrained with molten or semi-melted alkali metal silicate, which condenses when it contacts the inner wall of the boiler and accumulates continuously, eventually causing serious problems such as ash accumulation and slagging, which endanger the normal operation of the boiler

Method used

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  • Anti-slagging biomass pellet fuel and preparation method thereof
  • Anti-slagging biomass pellet fuel and preparation method thereof
  • Anti-slagging biomass pellet fuel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] An anti-slagging biomass granular fuel is prepared from the following raw materials in parts by weight:

[0038] 30 parts of corn stalks, 20 parts of peanut shells, 10 parts of poplar wood chips, 10 parts of activated sludge, 2 parts of fly ash, 2 parts of bacterial stick waste, 1000 parts of dealkalization treatment solution, 0.1 part of hydroxypropyl methylcellulose , 10 parts of modified kaolin, 5 parts of anti-slagging agent.

[0039] Wherein, the preparation method of modified kaolin is as follows:

[0040] Mix kaolin and calcium acetate evenly at a mass ratio of 3-5:1, raise the temperature to 80-100°C and keep it warm for 5-10 hours under nitrogen protection, take it out after cooling to room temperature, add it to water, add microcrystalline paraffin, and stir After forming a paste, let it stand for 1-2 hours, dry at 50-60°C for 10-15 hours, heat up to 130-140°C and calcinate for 30-60 minutes, cool to room temperature and grind through a 200-400 mesh screen. ...

Embodiment 2

[0044] An anti-slagging biomass granular fuel is prepared from the following raw materials in parts by weight:

[0045] 25 parts of corn stalks, 20 parts of peanut shells, 5 parts of poplar wood chips, 10 parts of activated sludge, 1 part of fly ash, 3 parts of bacteria stick waste, 500 parts of dealkalization treatment solution, 0.5 parts of hydroxypropyl methylcellulose , 10 parts of modified kaolin, 5 parts of anti-slagging agent.

[0046] Wherein, the preparation method of modified kaolin is as follows:

[0047] Mix kaolin and calcium acetate evenly at a mass ratio of 5:1, raise the temperature to 80°C and keep it warm for 10 hours under the protection of nitrogen, take it out after cooling to room temperature, add it to water, then add microcrystalline paraffin, stir it into a paste, and let it stand Set for 1h, dry at 50°C for 10h, then heat up to 130°C and calcined for 60min, cool to room temperature and grind through a 200-mesh sieve.

[0048] The preparation method ...

Embodiment 3

[0051] An anti-slagging biomass granular fuel is prepared from the following raw materials in parts by weight:

[0052] 20 parts of corn stalks, 20 parts of peanut shells, 5 parts of poplar wood chips, 10 parts of activated sludge, 1 part of fly ash, 1 part of bacteria stick waste residue, 500 parts of dealkalization treatment solution, 0.1 part of hydroxypropyl methylcellulose , 5 parts of modified kaolin, 5 parts of anti-slagging agent.

[0053] Wherein, the preparation method of modified kaolin is as follows:

[0054] Mix kaolin and calcium acetate evenly at a mass ratio of 3:1, raise the temperature to 80°C and keep it warm for 5 hours under the protection of nitrogen, take it out after cooling to room temperature, add it to water, then add microcrystalline paraffin, stir it into a paste, and let it stand Set for 1h, dry at 50-℃ for 10h, then heat up to 130℃ and calcined for 30min, cool to room temperature and grind through a 200-mesh sieve.

[0055] The preparation meth...

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Abstract

The invention relates to the field of fuels, in particular to an anti-slagging biomass pellet fuel and a preparation method thereof. The anti-slagging biomass pellet fuel is prepared from straw, peanut shells, sawdust, activated sludge, fly ash, mushroom stick waste residues, dealkalization treatment liquid, hydroxypropyl methyl cellulose, modified kaolin and an anti-slagging agent. The biomass pellet fuel prepared by the invention is low in slagging rate (less than or equal to 0.12%), high in calorific value (greater than or equal to 2.42 MJ / kg), short in ignition time (less than or equal to 50s), high in crushing strength and not easy to crack and generate dust in the storage and transportation processes, and is a relatively ideal fuel capable of replacing coal.

Description

technical field [0001] The invention relates to the field of fuels, in particular to an anti-slagging biomass particle fuel and a preparation method thereof. Background technique [0002] Biomass fuel generally refers to the columnar fuel produced by processing straw, rice straw, rice husk, peanut husk, corncob, camellia oleifera husk, cottonseed husk, etc., as well as "three leftovers", which can be directly burned and has excellent combustion characteristics; It has the advantages of less black smoke, strong firepower, full combustion, no fly ash, clean and hygienic, extremely small emissions of nitrogen oxides and sulfur oxides, and is convenient for transportation and storage. It can replace coal and burn directly in boilers for power generation or heat supply. It can also be used to solve basic living energy problems in rural areas. [0003] Biomass fuel raw materials such as straw, straw, rice husk, etc. will enrich a certain amount of alkali metal elements (such as K...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10L5/46
CPCC10L5/442C10L5/445C10L5/46C10L2290/08C10L2290/24C10L2290/30C10L2290/32Y02E50/10Y02E50/30
Inventor 陈志高陈凯波
Owner 湖南创威科技有限公司
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